I use "ACAPI_Notify_CatchNewElement" to catch the modify of the element.
When I change the material attribute which has already been used at current surface,the observer can't get change.
figure1 shows the material current use.
figure2 shows change material.
However, When I change the material's texture, I can't get the change in "ElementEventHandlerProc".
So how should I do can get the change?